CDL Combination Vehicles Test practice questions
205 free questions with answers and explanations.
- 201.A commercial driver operating a combination vehicle notices that the trailer is constantly swaying even when driving on a straight, level road with no strong winds. What is the most likely cause of this persistent trailer sway?Driving Combination Vehicles Safely
- 202.A driver is connecting the air lines between the tractor and trailer. Which of the following is the correct procedure for connecting the emergency (red) air line?Coupling and Uncoupling
- 203.During the uncoupling process, after the landing gear is fully extended and supporting the trailer, what is the next critical step before pulling the tractor away?Coupling and Uncoupling
- 204.When coupling a tractor to a trailer, after backing the tractor until the fifth wheel is under the trailer and the kingpin is locked into the fifth wheel jaws, what is the next step to ensure a secure connection?Coupling and Uncoupling
- 205.After successfully coupling the tractor to the trailer, and before raising the landing gear, what is the crucial final check to confirm the security of the connection and prevent separation?Coupling and Uncoupling